Add basic GitHub Action for running unit tests + code coverage (#1666)

* Add basic GitHub Action for running unit tests  + code coverage

* Bump go version

* Remove some extra blank lines

Author: backjo

.github/workflows/test.yaml

@@ -0,0 +1,28 @@
+name: Unit Test
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.15
+ 
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Run unit tests
+      run: |
+        sudo snap install yq
+        make test
+        
+    - name: Codecov
+      uses: codecov/codecov-action@v1
+      with:
+        file: ./cover.out # optional